Description
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.25, 10.4.14, 11.1.1 requesting invalid or non-existing resources via HTTP triggers the page error handler which again could retrieve content to be shown as error message from another page. This leads to a scenario in which the application is calling itself recursively - amplifying the impact of the initial attack until the limits of the web server are exceeded. This is fixed in versions 9.5.25, 10.4.14, 11.1.1.
References (3)
Core 3
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://packagist.org/packages/typo3/cms-core
Third Party Advisory x_refsource_confirm
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-4p9g-qgx9-397p
Vendor Advisory x_refsource_misc
https://typo3.org/security/advisory/typo3-core-sa-2021-005
Scores
CVSS v3
5.9
EPSS
0.0173
EPSS Percentile
74.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-674
CWE-405
Status
published
Products (3)
typo3/cms
10.0.0 - 10.4.14Packagist
typo3/cms-core
10.0.0 - 10.4.14Packagist
typo3/typo3
9.0.0 - 9.5.25
Published
Mar 23, 2021
Tracked Since
Feb 18, 2026